Attachment for dental hand pieces and stone protectors and water coolers



Aug. 27, 1935. G. G. LQWRY 2,012,886..

ATTACHMENT FOR DENTAL HAND PIECES AND STONE PROTECTORS AND WATER COOLERSFiled NOV. 10, 1933 a a jug.

Patented Aug. 27, 1935 PATENT? 01mg 2,012,886 ATTACHMENT FOR DENTAL HANDPIECES AND STONE PROTE COOLERS I A George G. Lowry, Pittsburgh, Pa.,

7 of one-half. to Samuel .burgh, Pa.

CTORS AND WATER assignor Lowry Henry, Pittse Application November 10,1933, Serial No. 697,519

2 Claims. (01. s2- 10),-

' This invention relates to certain new and useful improvements inattachments for dental hand piecesand stone protectors and watercoolers.

The primary object of this'invention is to pro-- '5 vide a liquid feeddevice for a dental hand piece having the end presented to the grindingwheel thereof for supplying moisture to the grinding Wheel and to theteeth thereby preventing overheating of the grinding wheel while thetooth is being ground and preventing the resultant pain caused by saidoverheating.

A still further object of this inventionis to provide a device of theabove mentioned character including a detachable clamp adapted to beattached to any dental hand pieceeasily and conveniently, withoutrequiring alterations in the hand piece.

A'still further object of the invention is to provide a detachable clampof the above mentioned character for a dental hand piece having agrinding wheel guard associated therewith adapted to partially encirclethe grinding wheel to prevent the moisture fed thereto from being thrownby centrifugal force into different portions of the patients oralcavity.

A still further object of this invention is to provide an attachment forany dental hand pieces of the above mentioned character in which theliquid or water supply pipe is provided with a valve in close proximityto the end of the dental hand piece whereby the operator may, at will,control the supply of liquid to the grinding wheel.

A still further object of this invention is to provide a detachablegrinding wheel guard which may be alternately removed for the insertionof a spray nozzle or jet having its end presented to the grinding wheelof the dental hand piece.

Other objects and advantages of the invention will become apparentduring the course of the following description forming a part of thisspecification, taken with the drawing, wherein,

Figure 1 is a side elevational view of the device embodying thisinvention illustrating the same applied to a dental hand piece;

Figure 2 is a top elevational view of the same illustrating the grindingwheel enclosing guard and controlling valve;

Figure 3 is a bottom elevational View showing the gripping fingers ofthe detachable clamp and themanner in which the same are associated withthe dental hand piece;

Figure 4 is an enlarged longitudinal cross-sectional view of theattachment illustrating the clamping bracket, liquid supply pipe anddetachable guard carried thereby;

gure 5 is a side elevational view of "the inven-" tion showing thegrinding wheel'guard removed and the spray 'pipe or' jet positioned inlieu thereof} and k I Y Figured isfa vertical cross-sectional view takenon line 6'6 of Figure 4,'lo'oking in the direction of the arrows andillustrating the controlling valve interposed in the water supply pipecarried by the removable bracket. V T

In the drawing wherein for the purpose of illustrating the inventionand'wherein like reference characters will be employed to designate likeparts throughout the same, the reference character A will generally beemployed to designate a dental hand piece having'a rotatable shaftdriven by means of the pulley Band a bracket C for being attached to auniversal shaft.' The usual thumb piece D is provided for tightening andloosening the jaws of the hand piece which engages the tool shank E. Agrinding wheel F is mounted on the tool shank in the usual manner.

The invention comprises a frame 5 having a tapering portion 6 adapted toconform with the hand piece A and formed on the frame 5 at opposite endsthereof are clamping arms I and 8. The clamping arm 7 is tapered to alsoconform to the shape of the hand piece tip.

Formed integral with the clamping frame 5 are tubular portions 9 and I 0which are connected by means of a pipe or tube l I which has its endsinserted in the tubular portions 9 and I 0 as at l2 and I3. Extending inthe opposite end of the tubular portion I0 is a nipple I4 having abulbous shaped end l5 adapted to receive a flexible hose I 6 such asrubber. The opposite end of the rubber tube or hose l6 may be connectedto a water supply pipe.

Inserted within the open end of the tubular portion 9 is an angular pipeIT as at l8 and it will be noted that the angular pipe I! is providedwith a slip fit within the tubular portion 9 so that the same may bequickly and easily removed when desired.

Formed on the outer end of the angular tube- IT is an interchangeablegrinding wheel guard 20 so that the bore 2! of the angular tube I 1extends therethrough and is presented to the grinding wheel F. Anextension 22 is formed on the guard 20 and is provided with an aperture23-for the passage of the tool spindle E thereby holding the guard 20 inplace. The guard is formed from metal or other material and includesa-semi-oircular band 24 secured to the portion 200, by welding or thelike.

The tubular portion In is provided with a trans- 4 verse bore, in whichis received a rotary valve plug 25 having a transverse bore 26 adaptedto register with the bore formed in the tubular portion ID. One end ofthe rotary valve plug 25 is screw threaded as at 21 for receiving a nut28 to retain the-Tplug in place, while the opposite end is provided witha thumb piece 29 for the manual operation of the valve.

As shown in Figure guard 26 has been removed and in'lieu thereof therehas been inserted into the tubular portion 9 a spray pipe 30 having atapered end 3| which is presented to the grinding wheel F substantiallyin the same position as the angular tube H.

Instead of connecting the pipe 16 to a water supply-pipe or faucet, thesame may be: connected to a tube I611 of a bulb L611 having a supply ofwater therein so that by manipulating the bulb l 6b by hand pressure,water'or liquid rnay be projectedfrom the spray tubeBEl throughthetapered end 3lj 'onto the; grinding'wheel F. It is to be I understoodthat the attachment will be construct- 7 ed of material that lendsitself tosterilization with, the hand piece, and may be formed of anysuitable material for the purpose, such as chromenickel, alloy, orchromium'plated'metal. The form of the invention herewith-shown anddescribed is to be taken as the'preferred'embodiment of the same andvarious changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit and scope of the inventionas claimed.

Icla im:-+ I. An attachment for a dental hand piece carrying a grindingstone, comprising a bracket clip, a'tubular member carried thereby,means for supplying water to one end of the tubular mem- 5, the angulartube and;

her, an outlet pipe for the water attached to the other end thereof fordirecting water onto the grinding stone, a guard rigid with the outerend of the outlet pipe and adapted to partially inclose the grindingstone, said pipe and guard being detachable from the tubular member topermit substitution of guards of different sizes, said attachmentadapted to be disposed laterally of a dental hand piece with which theattachment is adapted to be associated and a portion of the guardtraversing theend of the dental hand piece and having a bearing thereinlaterally of the point of rigid connection between the guard and outletpipe for the shaft of a dental hand piece and a manually operable valvein' the tubular member forcontrolling the throw of water ontothegrinding stone.

'2. An attachment for a dental hand piece carrying a. grinding stone,comprising a bracket clip, a tubular member carried thereby, a watersupply pipe attached to one endof the tubular member, an outlet pipe forthe water attached tov the other end thereof, a water control valvein'the tubular member for controlling the flow of water: therethrough, aguard carried by the outer end of the outlet pipe and spaced outwardlyof the end or the dental hand piece for partially inclosing the grindingstone, said attachment adapted to be disposed laterally of a dental handpiece with which the attachment is adapted to be associated and aportion of the guard traversing the end of the dental hand piece with abearing in .the guard for the shaft supporting the grinding stone ontovwhich the water is adapted to be thrown under control of said valve.

GEORGE G. LOWRY.

